Is it OK to Install a Roof in the Rain?

Marwa Hasan
Written by Marwa Hasan
Updated September 20, 2021
A two story house with a tiled roof
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You'll have to wait for nice weather for a precise and safe job.

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You've been excited to install a new roof. But after weeks of planning and anticipating, the forecast is full of rain clouds. And while roofing contractors often try to schedule jobs when the weather is pleasant, we all know that Mother Nature can be unpredictable. 

Rain can halt any home improvement project, especially a new roof. Learn why it’s not safe or smart to install a roof in the rain.

Short Answer: Don’t Install a Roof in the Rain

Your roof protects your home from elements such as wind and rain. But roof installation must happen in dry conditions.

Roofing contractors always monitor the weather. They won’t install roofs when it rains because any moisture can sneak in, get trapped, and affect the quality of your roof. 

Here are a few reasons why you should never install your roof in wet conditions.

Can Ruin the Integrity of Your Installation

During a roofing installation, your roofing deck can get wet, leading to mold, mildew, warping, and ultimately the failure of your new roof. Certain roofing components such as decks, boards, and felts are sensitive to water. 

Roofing shingles won't adhere to a wet roof and can slip off. Besides, installing in the rain violates most building codes.

Roofers might be liable for damage, so they won’t install a roof in the rain because they cant’ guarantee quality craftsmanship in wet conditions.

Creates a Hazardous Work Environment

Safety is always a primary consideration for roofing contractors.

Roofing in the rain requires caution because shingles will get slippery and cause workers to slip and fall, even when following correct safety procedures. Roofing specialists and contractors shouldn’t be working in such hazardous conditions. 

Be sure to check with your roofer if they have the proper insurance. If not, liability for any injuries on your property could fall on you.

Can Void Your Warranty

Roofing manufacturers require roofers and homeowners to follow specific steps to maintain warranties, including not installing in the rain. 

What Happens if it Starts to Rain During Roof Installation?

While roofers can complete smaller projects in a day, others may take several. It's possible that rain may come unexpectedly, especially if you live in an area that is prone to rain. 

Your roofers should be prepared to quickly cover up any open areas with tarps to protect the area from water seeping in. Any work will need to stop during this period. 

It's a good idea for roofers to work on one section at a time to minimize exposure in case of unpredictable rain or thunderstorms.

Things to Consider Before Installing your Roof

Detail of a roof tile pattern
R.Tsubin/Moment via Getty Images

Installing a new roof can be a big investment; it takes a considerable amount of time, effort, and money. With that said, it’s best not to waste these resources by making sure that the work is done under the right conditions. 

Plan According to the Weather Forecast

Always check the forecast before starting the job. If the weather forecast is bad, postpone your appointment to a better time to install the roof for optimal results.

Ask Potential Contractors

Before you hire a roofer, ask them about the precautions they take if it starts to rain during installing the roof and come to an agreement before the job begins. 

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